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Radiant|Natural|GIA

1.51ct D SI2 Radiant Natural Diamond

ID • D/SI2 • GIA 1538968465

Certificate GIA 1538968465

Diamond specifications and retailer prices

From £3,210 GBP
HK$33,600 HKD
As of October 31, 2026
Save £3,353 GBP (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £7,844 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1538968465. Listed at 15 retailers as of October 29, 2026, with a 104% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.3°
OriginNatural
Grading LabGIA
CertificateGIA 1538968465
Dimensions7.43 × 5.71 × 3.98 mm
L/W Ratio1.30
Girdle conditionPolished
Top View
7.43 mm5.71 mm1.51 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1538968465
Side View
Table 69.0%CrownGirdle: STK-THKPavilion 35.3°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £3,680 GBP|Low: £3,181 GBP|High: £6,984 GBP|Avg: £4,279 GBP|+6.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 6£3,210 GBP
Retailer 4£3,280 GBP
Retailer 5£3,362 GBP
Retailer 9£3,426 GBP
Retailer 10£3,601 GBP
Retailer 1£3,680 GBP
Retailer 12£3,806 GBP
Retailer 13£3,810 GBP
Retailer 7£3,991 GBP
Retailer 3£4,709 GBP
Retailer 8£4,745 GBP
Retailer 2£6,563 GBP
Retailer 11£6,686 GBP

37 data points across 13 retailers

15 retailers£3,210 GBP to £6,563 GBP

A
Cheapest Retailer
-
£3,210 GBP
HK$33,600 HKD
A
Retailer 2
-
£3,280 GBP
$4,395 USD
View
Retailer 3
-
£3,362 GBP
$4,505 USD
View
Price last confirmed 24 days ago
A
Retailer 4
-
£3,426 GBP
$4,591 USD
View
A
Retailer 5
-
£3,601 GBP
$4,825 USD
View
A
Retailer 6
-
£3,680 GBP
$4,931 USD
View
Final sale: no returns
A
Retailer 7
-
£3,806 GBP
$5,100 USD
View
A
Retailer 8
-
£3,810 GBP
$5,105 USD
View
A
Retailer 9
-
£3,991 GBP
View
A
Retailer 10
-
£4,302 GBP
A$8,868 AUD
View
A
Retailer 11
-
£4,709 GBP
SGD 8,527 SGD
View
A
Retailer 12
-
£4,745 GBP
€6,055 EUR
View
B+
Retailer 13
-
£6,563 GBP
View
Retailer 14
-
£6,686 GBP
$8,959 USD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
3878d734-e09f-4865-ac8f-21f2881f453b · Sep 25
£7,844 GBP
$10,510 USD
View
Price last confirmed 36 days ago
14 more retailers have this diamond
Prices start from £3,210 GBPSave up to £3,353 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Radiant
£3,210 GBP